Status: ISO 1750 (published)
IUPAC: S-methyl (EZ)-N-(methylcarbamoyloxy)thioacetimidate
CAS: 16752-77-5
Formula: C5H10N2O2S
Activity: insecticides

Structure:

Methomyl APPLICATIONS
Biochemistry Cholinesterase inhibitor. Mode of action Systemic insecticide and acaricide with contact and stomach action. Uses Control of a wide range of insects (particularly Lepidoptera, Hemiptera, Homoptera, Diptera and Coleoptera) and spider mites in fruit, vines, olives, hops, vegetables, ornamentals, field crops, cucurbits, flax, cotton, tobacco, soya beans, etc. Also used for control of flies in animal and poultry houses and dairies. Phytotoxicity Non-phytotoxic when used as recommended, except to some varieties of apple. Formulation types SL; SP; WP. Selected tradenames: 'Lannate' (Du Pont); 'Dimethilin' (Efthymiadis); 'Dunet' (Dhanuka); 'Kuik' (Rotam); 'Methavin' (Aventis); 'Methomex' (Makhteshim-Agan); 'Methosan' (Sanachem); 'Nudrin' (BASF); 'Pilarmate' (Pilarquim); 'Sathomyl' (Sanonda); mixtures: 'Flybait' (+ muscalure) (Denka)

Methomyl ANALYSIS
Product analysis by hplc (J. E. Thean et al., J. Assoc. Off. Anal. Chem., 1978, 61, 15; R. E. Leitch & H. L. Pease, Anal. Methods Pestic. Plant Growth Regul., 1973, 7, 331). Residues determined by glc with FPD (idem, ibid.; R. T. Krause, J. Assoc. Off. Anal. Chem., 1980, 63, 1114; M. A. Luke et al., ibid., 1981, 64, 1187; A. Ambrus et al., ibid., p. 733) or by rplc (AOAC Methods, 1995, 985.23). Details available from Du Pont. For methods in drinking water, see AOAC Methods, 1995, 991.06.